ECSR
Class RK5 600Vac, 1 to 60A
Dual-Element, Time-Delay Fuses
Form No. ESCR 1-60
Page 1 of 2
Data Sheet #1317
0109
BU-SB08453
Catalog Symbol: ECSR
Dual-Element, Time-Delay – 10 second (minimum) at 500%
rated current
Current-Limiting
Volts: 600Vac (or less)
Amps: 1 to 60A
IR: 200kA RMS Sym.
Agency Information: CE, UL Listed, Std. 248-12,
Class RK5, Guide JDDZ, File E162363 CSA Certified,
HRCI-R C22.2 No. 248.12, Class 1422-02, File 53787
Features
• Provides motor overload, ground fault and short-circuit
protection. When used in circuits subject to surge
currents such as those caused by motors, transformers
and other inductive components, these fuses can be
sized close to full load amps to give maximum
overcurrent protection.
• Permits the use of smaller and less costly switches. The
time-delay feature makes it possible to use fuse amp
ratings which are much smaller than those of non
time-delay fuses. Considerable cost saving occurs by
permitting the use of smaller size switches, panels and
fuses themselves.
• Provides a higher degree of short-circuit protection
(greater current limitation) in circuits in which surge
currents or temporary overloads occur.
• Helps protect motors against burnout from overloads.
• Gives motor running back-up protection to motors
without extra costs.
Dimensions (inches)
Carton Quantity and Weight
Carton W
eight per Carton
Amp
s Quantity lbs kg
1-15 10 0.40 0.18
17.5-30 10 0.50 0.28
35-60 10 3.10 1.41
• Helps protect motors against burnout from single
phasing on three-phase systems.
• Simplifies and improves blackout prevention (selective
coordination).
• Dual-element fuses can be applied in circuits subject to
temporary motor overloads and surge currents to
provide both high-performance, short-circuit and
overload protection.
• The overload element provides protection against low
level overcurrent of overloads and will hold an overload
which is five times greater than the amp rating of the
fuse for a minimum of ten seconds.
Catalog Numbers (amps)
ECSR1 ECSR7 ECSR17.5 ECSR45
ECSR2 ECSR8 ECSR20 ECSR50
ECSR3 ECSR9 ECSR25 ECSR60
ECSR4 ECSR10 ECSR30
ECSR5 ECSR12 ECSR35
ECSR6 ECSR15 ECSR40
